This structure is, however, dynamic and is maintained and remodeled by the actions of a range of histone-like proteins, which associate with the bacterial chromosome. In archaea, the DNA in chromosomes is even more organized, with the DNA packaged within structures similar to eukaryotic nucleosomes.
As such, most testosterone boosters claim to work by boosting free testosterone levels within your body using one or more of the following primary ingredients: 1  DHEA (dehydroepiandrosterone) â DHEA functions as a precursor to testosterone.
Similar to Zinc, Vitamin D can also regulate testosterone levels. However, 'deficiency' is a bit different. The RDA/DRI for Vitamin D tends to be around 400-800 IU (International Units) per day, depending on country of origin.